#列表的操作，追加原理
ten_things="Apples Oranges Crows Telephone Light Sufar"

print("Wait there are not 10 things in that list.Let's fix that.")

stuff=ten_things.split(' ')
more_stuff=["Day","Night","Song","Frisbee",
            "Corn","Banana","Girl","Boy"]

while len(stuff)!=10:
   next_one=more_stuff.pop()
   print("Adding:",next_one)
   stuff.append(next_one)
   print(f"There are {len(stuff)} items now.")

print("There we go:",stuff)

print("Let's do some things with stuff.")

print(stuff[1])
print(stuff[-1])#whoa! fancy
print(stuff.pop())
print(' '.join(stuff))#what? cool!
print('#'.join(stuff[3:5]))#super stellar!
